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A multi-sensor attack identification method for networked motion control system

A motion control system and identification method technology, applied in the field of multi-sensor attack identification, can solve problems such as poor accuracy, and achieve the effect of satisfying identification accuracy

Active Publication Date: 2022-04-08
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of poor accuracy existing in the existing detection methods, the present invention provides a multi-sensor attack identification method for a networked motion control system. The attack signal can be accurately identified, and the method is not limited by the number of system outputs, and the identification result can meet the accuracy of practical application

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  • A multi-sensor attack identification method for networked motion control system
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  • A multi-sensor attack identification method for networked motion control system

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[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and actual experiments.

[0033] refer to Figure 1-Figure 5 , a multi-sensor attack identification method for a networked motion control system. Firstly, the motion control system is modeled to determine its transfer function; the system transfer function is converted into a state-space model; The output signal of the sensor attack is decomposed by EMD; finally, the Fourier transform is performed on the attack signal and the corresponding decomposed components, and the spectral characteristics of the two are compared.

[0034] The present invention is a multi-sensor attack identification method for a networked motion control system, comprising the following steps:

[0035] 1) Determine the transfer function of the networked motion control system; ...

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Abstract

A multi-sensor attack identification method for a networked motion control system. Firstly, the networked motion control system is modeled to determine its transfer function; the system transfer function is transformed into a state space equation; the output signal containing multiple sensor attacks is EMD Decomposition; finally, Fourier transform is performed on the attack signal and the decomposition component, and the spectral characteristics of the two are compared. This method can accurately identify the frequency of each attack signal in the case of multiple attacks on the system, and the identification results can meet the accuracy of practical applications.

Description

technical field [0001] The invention belongs to the technical field of network security, and specifically provides a multi-sensor attack identification method of a networked motion control system, which can identify attacks, assess the system situation, and ensure its safe operation. Background technique [0002] In recent years, the industrial control system (industrial control system) has experienced an important development process, the introduction of open communication protocols such as industrial Ethernet and TCP / IP, and the connection with the external network has become closer and more frequent, which has greatly improved The degree of intelligence and informatization of industrial control systems has been greatly reduced, and a series of new security challenges have also been triggered. Many attacks intrude into industrial control systems through the Internet. Security attacks in manufacturing, energy, petrochemical, water conservancy, nuclear industry control syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40
CPCH04L63/1416
Inventor 朱俊威顾曹源张文安俞立董辉徐建明
Owner ZHEJIANG UNIV OF TECH